Scientists have been searching for evidence of extraterrestrial life for decades. So, where are all the aliens? Here are 12 ...

NASA has been tracking a giant asteroid, about the size of a stadium, that is set to pass very close to Earth this week.

A panel of experts has picked seven finalists for the name of asteroid (164207) 2004 GU9, a "quasi-moon" of Earth. You can vote for your favorite through Jan. 1, 2025.

"That very bright "star" in the eastern sky after sunset? It's actually the planet Jupiter. With a small telescope, ...

The night skies this month are genuinely loaded with goodies. Not only are all the wonderful winter constellations visible, but all five naked-eye planets are also visible this month. Our ...

December's night sky offers Venus and a crescent moon shining together as the planet emerge after sunset and a “Cold Beaver ...

One of Uranus's moons likely has an ocean while the composition of the planet itself is more bizarre than we knew ...

NASA's Europa Clipper embarks on a 1.8 billion-mile journey to study Jupiter’s moon Europa for potential habitability.

As autumn winds down and winter begins, these December evenings are graced with not only huge, breathtaking constellations ...

Headed to Jupiter’s moon Europa, NASA’s Europa Clipper spacecraft is operating without a hitch and will reach Mars in just ...

The sun enters Capricorn during the winter solstice on December 21, the northern hemisphere's shortest day of the year. This ...

The asteroid, named 2024 WF5, will come over twice as close to us as the moon, at a distance of around 104,000 miles.